Power Nailing Machine Strike Depth Adjustment Mechanism
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Solution Overview
Problem
Existing power drive nailing machines face issues with unstable operation and erroneous activation due to the need for tools to adjust the strike depth and potential deformation of the contact arm, which hinders the direct transmission of movement to the activation control apparatus.
Innovation Solution
A strike depth adjusting apparatus that allows for easy adjustment of the contact member's length without tools, utilizing a contact rod and operating dial with a hexagonal section and guide hole for secure connection, ensuring linear transmission of movement to the activation control apparatus, and a combustion chamber mechanism for hermetic closure by a movable valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the contact member is connected to the activation control apparatus via a bent contact arm using screws, then the structure can be assembled, but the contact arm may deform during operation causing erroneous activation or failure to activate
Solution Approach 1:
The contact arm is divided into two separate segments: the contact member and the activation control apparatus are connected directly without an intermediate bent arm. This segmentation eliminates the deformation-prone bent contact arm while maintaining the functional connection between the contact member and activation control apparatus.
Solution Approach 2:
A guide hole is introduced as an intermediary structural element to guide and constrain the movement of the contact member. The guide hole ensures linear movement along the nose portion and prevents lateral displacement that could cause deformation or misalignment, thereby eliminating the need for the bent contact arm.
2Ease of operation
If the strike depth is adjusted using plate-like members with meshed recessed and projected faces fixed by screws, then the adjustment mechanism can be assembled, but tool-free adjustment becomes difficult and operation becomes complex
Solution Approach 1:
The adjustment mechanism is made dynamically adjustable by allowing the contact member to move linearly along the guide hole. The strike depth is adjusted by simply moving the contact member to different positions along the guide hole, eliminating the need for complex meshed plate structures and screw fastening operations.
Solution Approach 2:
The complex mechanical adjustment system involving meshed recessed and projected faces with screw fastening is replaced by a simpler linear movement system guided by the guide hole. The adjustment is achieved through direct linear displacement rather than through meshed mechanical engagement, making it tool-free and easier to operate.
3Adaptability or versatility
If the contact member projects further to increase strike depth adjustment range, then larger adjustment range is achieved, but the contact arm becomes more prone to deformation
Solution Approach 1:
The adjustment range is extended by utilizing the linear dimension along the guide hole rather than increasing the lateral projection of a bent contact arm. The contact member moves along the axial direction of the guide hole, providing a large adjustment range without requiring a long, deformation-prone bent arm structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables stable and accurate adjustment of strike depth without tools, preventing erroneous operations and ensuring reliable activation of the nailing machine, while reducing costs and maintaining safety during high-temperature operations.
Implementation Method 1
a combustion gas drive nailing machine formed with a combustion chamber at inside of a housing for generating a combustion gas at high pressure at inside of the combustion chamber by injecting a combustible gas to inside of the hermetically closed combustion chamber and combusting the combustible gas, impulsively driving the piston at inside of the cylinder by operating the combustion gas to the piston
Implementation Method 2
there is provided the guide hole extended in parallel with an axis line of the injection port (15) from inside of the housing (2) along a side face of the nose portion (3), and the contact rod (22) formed with a male screw portion (21) screwed to the female screw portion (18) held at inside of the guide hole (20) in a slidable and rotatable state
Implementation Method 3
the contact rod (22) formed with a male screw portion (21) screwed to the female screw portion (18)
Data Source
AI summary
A nailing machine includes a contact rod substantially in a straight shape and an operating dial. The contact rod is slidably and rotatably supported by a nose portion. The operating dial is slidably penetrated to be inserted by the contact rod, rotatably provided integrally with the contact rod and provided rotatably and by being restricted from being moved in an up and down direction with respect to the nose portion. A length of projecting the contact member in a direction of a front end of the nose portion is adjusted by rotating the contact rod by way of the operating dial.